Ke kumu o ka mea hoʻopololei pale

Hoʻolauna

Mea hoʻomalu i ka piʻi ʻana (SPD), i ʻike ʻia ʻo“Paʻa uila”or “Mea hoʻomalu overvoltage”, he mea pono loa i ka pale uila o nā lako uila.ʻO kāna hana, ʻo ia ke kaupalena ʻana i ka overvoltage transient i loko o ka laina mana a me ka laina hoʻouna hōʻailona i ka laulā e hiki ai i nā mea hana a ʻōnaehana paha ke halihali, a i ʻole ka hoʻokuʻu ʻana i ka uila ikaika i loko o ka honua, e pale i nā lako a i ʻole nā ​​​​pūnaewele mai ka pōʻino e ka haʻalulu. .

ʻO ka laulā noi o SPD ka mea nui o ka pale ʻana o ka mana haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa a me ka ʻōnaehana hoʻoili a me ka pale ʻana i ka laina laina o ka ʻōnaehana ʻike uila.ʻO ka mea mua e hoʻopau i ka uila uila electromagnetic pulse interference (EMP-RRB- e hele mai ana mai ka mana lako kaapuni, a ʻo ka mea hope e hoʻopau i ka EMP emp interference e hele mai ana mai ka pōʻai hōʻailona.

Huina

ʻO ke ʻano a me ke ʻano o aMea hoʻomalu i ka piʻi ʻanaʻokoʻa no nā kumu like ʻole, akā pono e loaʻa ma ka liʻiliʻi hoʻokahi mea palena palena ʻole laina.ʻO nā mea nui o ka Surge Protection Devices he metal oxide varistor (MOV), silicon avalanche diode a i ʻole TRANSORB diodes, pahu piha piha i ke kinoea, etc.

1) ʻO ka MOV kahi mea hoʻopuʻi piʻi maikaʻi, hoʻohana nui ʻia e pale i ka pōʻino pōʻino i nā mea hana, akā pono ia i ka manawa pane, ʻo ia hoʻi, hiki i kahi manawa pōkole loa ke komo i ka mea hana ma mua o ka hoʻāla ʻia ʻana o ke kaapuni paepae.No laila, ʻaʻole kūpono ka Surge Protection Device i hoʻolālā ʻia e MOV e pale i nā mea paʻakikī me ka microprocessor.Hoʻohana ʻia kēia hoʻolālā i kēia manawa ma 90% o nā mea pale pale i kēia manawa ma ka mākeke.

2) ʻoi aku ka wikiwiki o ka pane ʻana o ka avalanche diode a i ʻole TRANSORB diodes ma mua o MOV a ua maʻalahi i nā transients, akā ʻoi aku ka liʻiliʻi o ka nui o kēia mea ma mua o ka MOV nui.

3) He lōʻihi ka pane ʻana o ka pahu i piha i ke kinoea, akā hiki iā ia ke komo i ka nui o nā piʻi mana, a ua hoʻolālā ʻia e like me kahi“Hana hope”ana e hoʻopaʻa i nā ʻauwaʻa AC, pale i ke komo ʻana o nā piʻi mana i kānana ʻole ʻia e ka pae mua.

Pehea e hana ai

Mai ia manawa'saMea hoʻomalu i ka piʻi ʻana, hoʻokuʻu's hoʻomaka me ka piʻi ʻana.ʻIke ʻia hoʻi ʻo Surge he surge, e like me ka inoa i hōʻike ʻia ma mua o ka voli hana maʻamau o ka overvoltage koke.ʻO ka mea nui, ʻo ka piʻi ʻana he puʻupuʻu ikaika e hiki mai ana i loko o kekahi mau miliona o ke kekona a hiki ke hana ʻia e nā mea kaumaha, nā pōkole pōkole, nā hoʻololi mana a i ʻole nā ​​mīkini nui.ʻO nā huahana me nā mea hoʻopaʻa haʻalulu e hoʻopaʻa pono i ka piʻi koke o ka ikehu e pale aku i nā mea hoʻopili mai ka pōʻino.

E like me ke kumu hana, hiki ke hoʻokaʻawale ʻia ka Surge Protection Device i ke ʻano hoʻololi, ke ʻano palena-volt, ʻano shunt a i ʻole ʻano choke:

1) ʻano hoʻololi: hana ia ma ke ʻano he impedance kiʻekiʻe inā ʻaʻohe overvoltage transient, akā i ka manawa e pane ai i ka overvoltage transient uila, hoʻololi koke kona impedance i kahi haʻahaʻa haʻahaʻa, e ʻae ana i ka uila e hele i loko.ʻO nā mea i hoʻohana ʻia i ia mau mea: Discharge Gap, gas-filled tube, thyristor, etc.

2) ʻano palena palena voli: hana ia e like me ka impedance kiʻekiʻe inā ʻaʻohe overvoltage transient, akā e emi ana kona impedance me ka piʻi ʻana o ka inrush o kēia manawa a me ka uila, a ʻo kāna mau hiʻohiʻona o kēia manawa a me nā hiʻohiʻona he ikaika nonlinear.ʻO nā mea i hoʻohana ʻia i loko o ia mau mea e pili ana i ka zinc oxide, varistors, transient-voltage-suppression diode, avalanche diode, etc.

3) ʻano ʻoki a i ʻole ke ʻano ʻoki

ʻAno Shunt: i ka like me nā mea i pale ʻia, hōʻike ia i ka impedance haʻahaʻa i ka uila uila a me ka impedance kiʻekiʻe i ke alapine hana maʻamau;ʻano choke: ma ke ʻano me nā mea i pale ʻia, hāʻawi ia i ka impedance kiʻekiʻe i ka uila uila, akā i ke alapine hana maʻamau e hōʻike i ka impedance haʻahaʻa.ʻO nā mea hana i hoʻohana ʻia i loko o ia mau mea e pili ana i nā coils choke, kānana ala kiʻekiʻe, kānana haʻahaʻa haʻahaʻa, a me nā kaapuni pōkole haʻahaʻa haʻahaʻa.